(No!) is for rebuke him from thinking that his money makes him immortal. Money does not change anything because it is temporal pleasure, even if it remains, its owner will not remain.
This is the last (No!) mentioned in the Holy Qur’an.
After it the verse ends with an end that suits the Surah’s beginning which was the word (Woe), as explained it is a threatening from Allah (swt), the One Who is able to execute and, surely, the man cannot escape.
لَيُنبَذَنَّ (be thrown): To be thrown with humiliation and contempt.
This man as he used to scorn and mock people as a way of humiliating and disregarding them, accordingly, the result will be the same type as the deed; thus, he will be thrown in the crusher in that same way.